Oven



Nov. 27, 1951 L, CONNER' 2,576,252

' OVEN Filed June 4, 1947 2 SHEETS-SHEET 1 n if INVENTOR. l e o n Co n ne r ATTORNEY L. CONNER Nov. 27, 1951 OVEN 2 SHEETS -SHEET 2 Filed June4, 1947 L eon Conner INVENTOR.

ATTORNEY Patented Nov. 27, 1951 UNITED STATES PATENT OFFICE OVEN LeonConner, Dallas, Tex.

Application June 4, 1947, Serial No. 752,324

3 Claims. 1

This invention relates to cooking ovens and more particularly tomechanism for extending oven racks when the oven door is opened andretracting the same when the door is closed.

The principal object of the invention is to provide an oven rackactuating mechanism which includes primarily a rack carriage adapted totravel in channel tracks on each side of and below the oven, saidcarriage supporting upright lower standards the latter, in turn,carrying detachable upper standards which support an oven rack or racks.Through and by virtue of a novel linkage between the oven door quadrantand the lower standards, the carriage is reciprocated as the oven dooris opened and closed, causing the upper standards to be similarly movedin slots conventionally provided in the oven floor adjacent the sidewalls thereof and through which products of combustion enter the ovenchamber.

Another object of the invention is to provide in one element of thecarriage actuating linkage, a slot to cause delayed action of thecarriage as the oven door is opened so that inspection of the cookingproducts may be made without moving the rack on which they aresupported, said slot being ineffective to prevent intended displacementof the rack when the door is opened further.

Another object of the invention is to provide a cantilever support forone or more oven racks, the same consisting of a pair of verticallyaligned protuberances on each of the upper rack supporting standards,and a single protuberance adjacent thereto and in line with thelowermost of the pair to support the side rails of the rack which liebetween the said pair of protuberances. Thus, the rack is supported in ahorizontal position in the manner described at a point rearwardly of itsmidsection for extension well out of the oven when the door is fullyopened. Provision of more than one set of rack supporting protuberanceson each upper standard enables the rack to be adjusted, vertically.

Broadly, the invention seeks to provide a simple mechanism for extendingand retracting oven racks by door actuated supporting means extendingupwardly through and movable in slots already provided in the ovenbottom, thus affording such a mechanism for any and all types of ovensso equipped.

With the foregoing objects in view, the invention has further referenceto certain features of accomplishment which will become apparent as thedescription proceeds, taken in connection with the accompanying drawingswherein:

Figurel is a perspective view of an oven with the walls removed and aportion of the door broken away to better show the invention installedtherein.

Figure 2 isa transverse sectional view taken online 2-2 on Figure 4 butwith the rack removed.

of the drawings, reference numeral l0 denotes generally a range havingan oven compartment H and a broiler compartment 12. The invention canobviously be installed in ranges without broiler compartments providedthe space below the oven is adequate. The usual insulation for g theoven walls has been omitted from the drawings for clarity.

In the bottom of what may be considered the broiler compartment l 2 andat each side thereof are channel tracks 13, the upper flanges of whichserve as rails on which the foremost rollers I l (Figs. 4 and 5) operateand which latter support the forward end of a broiler drawer 15, therear portion thereof being supported by rollers l5a which operatebetween the flanges of the channel tracks I3. Also operating between theflanges of these channel tracks are rollers [6 of a carriage consistingof members ll (Fig. 1) parallel with the channel tracks l3 and aninterconnecting member [8 which extends from one to the other of saidmembers ll beneath the broiler drawer IS.

The carriage, which will be hereinafter identified by reference numeralll is free to move forwardly and rearwardly in the bottom of the broilercompartment 12, except that the forward movement is under restraint of apair of coiled springs l9, one on each side and lying alongside thechannel tracks I3. It will become apparent presently how these springsfunction as an aid in retracting the oven rack.

Mounted on and extending upwardly from each of the carriage members i lis a standard or upright 20, referred to as the lower standard. Each ofthese standards has a socket 2| on its inner face to receive anextension 22 carried, on the lower end of an upper standard 23. Thus,the upper and lower standards of each pair are in substantially verticalalignment with provision for easily and quickly detaching the upper fromthe lower standards if it is desired to remove the rack 24 and free theoven ll of the rack support.

It will be observed, especially in Figure 2 that the oven floor 25 isprovided on each side with a longitudinal slot 26. These slots areconventional with many stove designs and are for the purpose ofadmitting into the oven the products of combustion of the oven burner,not shown. The upper standards 23 extend upwardly through and aremovable in the slots 26, as shown.

To reciprocate the carriage I1 and consequently the standards 2823 andrack 24, a mechanism is provided, consisting of a link 21, pivoted atone end at a to the stove frame and at its other end at b to an end of asecond link 28.

The opposite end of link 28 is pivoted at c to the bottom of a lowerstandard 20. Thus, when the links 27 and 28 are extended, as shown inFigure 4, the standards are disposed at the rear of the compartment I2and when the links are collapsed or nearly so, as shown in Figure 5, therack supporting standards are disposed near the front of the compartmentl2, thus similarly positioning the rack 24.

To actuate the links as described and for the purpose set forth, an arm29 is pivoted at one end at d to a curved arm or quadrant 30, the latterbeing affixed to the oven door 3| and slidable in a slot 32 in the stoveframe when the door is operated. Adjacent the opposite end of arm 29 andlongitudinal therewith is a slot 33 receiving a pin 34 in theintermediate arm or link 21.

It is apparent from the foregoing that as the oven door 3| is moved fromclosed position to open position, a pull will be exerted on the arm 29through the quadrant 39 but displacing action of the pivoted links 21and 28 will be delayed until the end of slot 33 comes up against the pin34 of link 21. This delayed action permits the door 3| to be' partiallyopened to inspect the interior of the oven without moving the rack '24.If the rack is to be extended, the door 3i is moved to full openposition, whereupon tension imposed on arm 29 will exert an upward forceon link 21 which latter, upon movement thereof brings with it the link28 and consequently the standards 20-23 and rack 24 supported thereby.When the door is closed, the action is reversed and the parts resumetheir positions as shown in Figure 4.

To support the rack on the upper standards 23, each of the latter isprovided with vertically spaced sets of protuberances each setconsisting of two protuberances 35, one above the other and betweenwhich the side of the rack frame 24 is disposed. At one side andslightly above the lower of the two protuberances 35 is a thirdprotuberance 35 of the set and on which rests a portion of the rackframe, the latter being slightly bowed-at 3'! (Fig. 3) at its point ofengagement with the protuberances 36 to preclude longitudinaldisplacement thereof with respect to its mounting.

It is apparent that while the rack 24 will be positively held by thedescribed arrangement, it can be easily detached therefrom by the simpleexpedient of slightly elevating the front end and pulling the sameforwardly. Vertical adjustment of the rack may be effected by removingthe same and replacing it in another set of protuberances providedtherefor.

Manifestly, the construction as shown and described is capable of somemodification and such compartment mounted for horizontal fore and aftmovement, an upright on said carriage adjacent each side wall of saidlower compartment, a standard carried by each upright and extendingthrough one of said slots in said floor, a rack detachably supported bysaid standards on a horizontal plane, a door for said oven, a pair ofrelatively pivoted links, the first of said links being pivoted to saidupright, the second of said modification as may be construed to fallwithin 77 links being :pivoted to a stationary portion of said oven, acurved arm affixed at one end to said oven door and extending through aslot in the wall of said oven, and a slotted arm slidably connectedthrough its slot to the midsection of said second link and to the end ofsaid curved arm whereby movement of said door will actuate said links toeffect fore and aft movement of said carriage and said rack.

2. In a cooking oven, a door on said oven, a horizontal floor defining acompartment below said oven and having slots adjacent the side walls ofsaid oven, a carriage in said compartment mounted for horizontal foreand aft movement and having uprights thereon, standards on said uprightsextending through and slidable in the slots of said floor, a rackhorizontally disposed in said oven and supported by said standards,means carried by said standards for releasably holding said rack, a pairof links pivoted together atv one end, one of said links being pivotedat its opposite end to one of said uprights, the companion link beingpivoted to a stationary part of said oven, an arm pivoted displaceablyat one end to said companion link and means connecting the opposite endof said arm to said oven door whereby said carriage will be moved foreand aft as said oven door is opened and closed.

3. In an oven, a door therefor, a carriage below said oven mounted forhorizontal fore and aft movement, a floor in said oven having slotsadjacent the side walls of said oven, an upright on each side of saidcarriage extending through and slidable in a slot in said floor andhaving a socket on its upper end, a standard vertically disposed in saidsocket, a horizontal rack supported by the standards of said uprights, apair of cooperating links, one of which is pivoted at one end to astationary part of said oven, the companion link being pivoted at oneend to the free end of said first link and connected operatively at itsopposite end to one of said uprights, an arm having displaceable pivotalconnection adjacent one end with said first link adjacent the midsectionof the latter and means attached to said oven door and pivotallyconnected to the opposite end of said arm whereby to effect fore and aftmovement of said carriage as said oven door is opened and closed.

LEON 'CONNER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,262,659 Foster Apr. 16, 19181,582,543 Rowden Apr. 27, 1926 1,785,514 Chandler et al Dec. 16, 19301,819,388 Rosselle Aug. 18, 1931 2,069,706 Gerwig et al Feb. 2, 19372,101,582 Hoff Dec. 7, 1937 2,139,989 Weiskittel Dec. 13, 1938 2,168,172Rees Aug. 1,1939 2.319.651 Wilkinson et al May 18, 1943

